Patents by Inventor Pingyong Xu

Pingyong Xu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11090835
    Abstract: In one aspect, inks for use with a three-dimensional printing system are described herein. In some embodiments, an ink described herein comprises a thiol monomer component and an ene monomer component. Moreover, in some cases, an ink described herein further comprises an additional (meth)acrylate monomer component differing from the ene monomer component. In some such cases, the additional (meth)acrylate monomer component can be polymerized separately from the thiol and ene monomers of the ink.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: August 17, 2021
    Assignee: 3D SYSTEMS, INC.
    Inventors: John Fong, Pingyong Xu
  • Publication number: 20210009800
    Abstract: Polymerizable liquids are described herein which, in some embodiments, can produce 3D printed articles of high resolution and desirable mechanical properties. In one aspect, a polymerizable liquid comprises an acrylate component, a polymeric additive, and a monomeric curing agent, wherein the acrylate component and monomeric curing agent are copolymerizable upon exposure to light. In being copolymerizable, the acrylate component and monomeric curing agent can form a copolymer. As described father herein, the monomeric curing agent can enable further reaction of the copolymer with one or more crosslinking species to link the copolymer with one more polymeric networks.
    Type: Application
    Filed: July 10, 2020
    Publication date: January 14, 2021
    Inventors: Pingyong XU, John Fong, John Stockwell
  • Publication number: 20200040306
    Abstract: A printable composition for the manufacture of cell-receiving scaffolds comprising about 0.3 wt % to about 3.0 wt % of one or more collagens; about 5.0 wt % to about 40.0 wt % of one or more monomers; about 0.5 wt % to about 2.0 wt % of a photo initiator; and 0 wt % to about 75 wt % of a vehicle comprising a protic solvent, by weight of the printable composition; wherein the printable composition has a resolution of about 100 microns or less when printed, a photo speed (Dp/Ec) of about 0.1-5 mm (Dp) and about 10-100 mJ/cm2 (Ec) when printed, and a green strength of at least about 5 kPa after drying. The present technology further includes methods of manufacturing a three-dimensional cell-receiving scaffold using the printable composition.
    Type: Application
    Filed: August 1, 2019
    Publication date: February 6, 2020
    Applicant: Lung Biotechnology PBC
    Inventors: Pingyong Xu, Luis Alvarez, Derek Morris, Iman Yazdi
  • Patent number: 10487238
    Abstract: In one aspect, inks for use with a 3D printer are described herein. In some embodiments, an ink described herein comprises a cyclic carbonate monomer and an amine monomer. Further, in some instances, an ink described herein also comprises an ethylenically unsaturated monomer such as a (meth)acrylate. Additionally, an ink described herein, in some cases, further comprises a colorant, such as a molecular dye, a particulate inorganic pigment, or a particulate organic colorant. An ink described herein may also comprise one or more additives selected from the group consisting of inhibitors, stabilizing agents, photoinitiators, and photosensitizers.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: November 26, 2019
    Assignee: 3D Systems, Inc.
    Inventors: Bo Wu, Jeffery Banning, Pingyong Xu
  • Patent number: 10435573
    Abstract: In one aspect, inks for use with a three-dimensional printing system are described herein. In some embodiments, an ink described herein comprises 10-60 wt. % oligomeric curable material; 30-80 wt. % monomeric curable material; and 10-35 wt. % self-curable light-sensitive oligomer, based on the total weight of the ink. Moreover, in some cases, the ink is free or substantially free of non-curable photoinitiator. For example, in some instances, the ink further comprises less than 0.1 wt. % or less than 0.05 wt. % non-curable photoinitiator, based on the total weight of the ink.
    Type: Grant
    Filed: November 1, 2016
    Date of Patent: October 8, 2019
    Assignee: 3D Systems, Inc.
    Inventors: Pingyong Xu, John Fong
  • Publication number: 20190263019
    Abstract: In one aspect, inks for use with a three-dimensional printing system are described herein. In some embodiments, an ink described herein comprises a thiol monomer component and an ene monomer component. Moreover, in some cases, an ink described herein further comprises an additional (meth)acrylate monomer component differing from the ene monomer component. In some such cases, the additional (meth)acrylate monomer component can be polymerized separately from the thiol and ene monomers of the ink.
    Type: Application
    Filed: May 13, 2019
    Publication date: August 29, 2019
    Inventors: JOHN FONG, Pingyong Xu
  • Publication number: 20190249033
    Abstract: In one aspect, inks for use with a 3D printer are described herein. In some embodiments, an ink described herein comprises a cyclic carbonate monomer and an amine monomer. Further, in some instances, an ink described herein also comprises an ethylenically unsaturated monomer such as a (meth)acrylate. Additionally, an ink described herein, in some cases, further comprises a colorant, such as a molecular dye, a particulate inorganic pigment, or a particulate organic colorant. An ink described herein may also comprise one or more additives selected from the group consisting of inhibitors, stabilizing agents, photoinitiators, and photosensitizers.
    Type: Application
    Filed: April 22, 2019
    Publication date: August 15, 2019
    Inventors: Bo Wu, Jeffery Banning, Pingyong Xu
  • Patent number: 10328603
    Abstract: In one aspect, inks for use with a three-dimensional printing system are described herein. In some embodiments, an ink described herein comprises a thiol monomer component and an ene monomer component. Moreover, in some cases, an ink described herein further comprises an additional (meth)acrylate monomer component differing from the ene monomer component. In some such cases, the additional (meth)acrylate monomer component can be polymerized separately from the thiol and ene monomers of the ink.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: June 25, 2019
    Assignee: 3D Systems, Incorporated
    Inventors: John Fong, Pingyong Xu
  • Patent number: 10316214
    Abstract: In one aspect, inks for use with a 3D printer are described herein. In some embodiments, an ink described herein comprises a cyclic carbonate monomer and an amine monomer. Further, in some instances, an ink described herein also comprises an ethylenically unsaturated monomer such as a (meth)acrylate. Additionally, an ink described herein, in some cases, further comprises a colorant, such as a molecular dye, a particulate inorganic pigment, or a particulate organic colorant. An ink described herein may also comprise one or more additives selected from the group consisting of inhibitors, stabilizing agents, photoinitiators, and photosensitizers.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: June 11, 2019
    Assignee: 3D Systems, Incorporated
    Inventors: Bo Wu, Jeffery Banning, Pingyong Xu
  • Patent number: 10232529
    Abstract: In one aspect, support materials operable for use in 3D printing systems are described herein. In some embodiments, a support material comprises a wax component comprising at least one ethoxylated fatty alcohol and a viscosity modifying agent, wherein the support material is water dispersible. In some embodiments, the wax component comprises a mixture of at least one fatty alcohol and at least one ethoxylated fatty alcohol.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: March 19, 2019
    Assignee: 3D Systems, Inc.
    Inventors: Pingyong Xu, Khalil Moussa, John Stockwell
  • Publication number: 20180326713
    Abstract: In one aspect, inks for use with a three-dimensional printing system are described herein. In some embodiments, an ink described herein is a composite ink. Such a composite ink, in some cases, comprises an optically transparent or substantially transparent carrier ink comprising a curable material; and a colorant dispersed in the carrier ink in an amount of about 0.01 to 5 weight %, based on the total weight of the composite ink.
    Type: Application
    Filed: July 20, 2018
    Publication date: November 15, 2018
    Inventors: Patricia WANG, Pingyong XU, Jule W. THOMAS, Jr., Michael B. MEINHARDT
  • Patent number: 10052861
    Abstract: In one aspect, inks for use with a three-dimensional printing system are described herein. In some embodiments, an ink described herein is a composite ink. Such a composite ink, in some cases, comprises an optically transparent or substantially transparent carrier ink comprising a curable material; and a colorant dispersed in the carrier ink in an amount of about 0.01 to 5 weight %, based on the total weight of the composite ink.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: August 21, 2018
    Assignee: 3D Systems, Inc.
    Inventors: Patricia Wang, Pingyong Xu, Jule W. Thomas, Jr., Michael B. Meinhardt
  • Publication number: 20180215933
    Abstract: In one aspect, inks for use with a three-dimensional (3D) printing system are described herein. In some embodiments, an ink described herein comprise 10-70 wt. % or 20-40 wt. % of a cyclopolymerizable monomer, based on the total weight of the ink. The cyclopolymerizable monomer comprises an acrylate moiety and an ethenyl or ethynyl moiety, and the ?-carbon of the acrylate moiety and the ?-carbon of the ethenyl or ethynyl moiety may have a 1,5-, 1,6-, 1,7-, or 1,8-relationship. Additionally, an ink described herein can have a viscosity of 1600 centipoise (cP) or less at 30° C., or of 500 cP or less at 30° C. and can be used to print a desired 3D article having mechanical properties similar to those of articles formed from thermoplastic materials.
    Type: Application
    Filed: January 31, 2018
    Publication date: August 2, 2018
    Inventors: Pingyong Xu, John Fong
  • Publication number: 20170291357
    Abstract: In one aspect, inks for use with a three-dimensional printing system are described herein. In some embodiments, an ink described herein comprises a thiol monomer component and an ene monomer component. Moreover, in some cases, an ink described herein further comprises an additional (meth)acrylate monomer component differing from the ene monomer component. In some such cases, the additional (meth)acrylate monomer component can be polymerized separately from the thiol and ene monomers of the ink.
    Type: Application
    Filed: April 6, 2017
    Publication date: October 12, 2017
    Inventors: John Fong, Pingyong Xu
  • Publication number: 20170260418
    Abstract: In one aspect, inks for use with a 3D printer are described herein. In some embodiments, an ink described herein comprises a cyclic carbonate monomer and an amine monomer. Further, in some instances, an ink described herein also comprises an ethylenically unsaturated monomer such as a (meth)acrylate. Additionally, an ink described herein, in some cases, further comprises a colorant, such as a molecular dye, a particulate inorganic pigment, or a particulate organic colorant. An ink described herein may also comprise one or more additives selected from the group consisting of inhibitors, stabilizing agents, photoinitiators, and photosensitizers.
    Type: Application
    Filed: March 8, 2017
    Publication date: September 14, 2017
    Inventors: Bo Wu, Jeffery Banning, Pingyong Xu
  • Publication number: 20170210921
    Abstract: In one aspect, composite build materials for use with a 3D printing system are described herein. In some embodiments, a composite build material described herein comprises a carrier ink comprising a curable material; and pigment particles dispersed in the carrier ink, wherein the pigment particles comprise mica. In some cases, the carrier ink is present in the composite build material in an amount of about 80-98% by weight, and the curable material comprises one or more species of monomeric and/or oligomeric (meth)acrylates. Additionally, in some instances, the pigment particles are present in the composite build material in an amount of about 2-8% by weight and comprise up to about 85% by weight mica, based on the total weight of the pigment particles. The pigment particles, in some cases, can also comprise TiO2 and/or Fe2O3.
    Type: Application
    Filed: April 7, 2017
    Publication date: July 27, 2017
    Inventor: Pingyong Xu
  • Patent number: 9657186
    Abstract: In one aspect, inks for use with a three dimensional printing system are described herein. In some embodiments, an ink for use in a three dimensional printing system comprises about 10-95 weight % polymerizable component and about 3-25 weight % non-reactive wax component, wherein the ink when cured has a Tg greater than the melting point of the non-reactive wax component.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: May 23, 2017
    Assignee: 3D Systems, Inc.
    Inventor: Pingyong Xu
  • Patent number: 9650526
    Abstract: In one aspect, composite build materials for use with a 3D printing system are described herein. In some embodiments, a composite build material described herein comprises a carrier ink comprising a curable material; and pigment particles dispersed in the carrier ink, wherein the pigment particles comprise mica. In some cases, the carrier ink is present in the composite build material in an amount of about 80-98% by weight, and the curable material comprises one or more species of monomeric and/or oligomeric (meth)acrylates. Additionally, in some instances, the pigment particles are present in the composite build material in an amount of about 2-8% by weight and comprise up to about 85% by weight mica, based on the total weight of the pigment particles. The pigment particles, in some cases, can also comprise TiO2 and/or Fe2O3.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: May 16, 2017
    Assignee: 3D Systems, Inc.
    Inventor: Pingyong Xu
  • Publication number: 20170121542
    Abstract: In one aspect, inks for use with a three-dimensional printing system are described herein. In some embodiments, an ink described herein comprises 10-60 wt. % oligomeric curable material; 30-80 wt. % monomeric curable material; and 10-35 wt. % self-curable light-sensitive oligomer, based on the total weight of the ink. Moreover, in some cases, the ink is free or substantially free of non-curable photoinitiator. For example, in some instances, the ink further comprises less than 0.1 wt. % or less than 0.05 wt. % non-curable photoinitiator, based on the total weight of the ink.
    Type: Application
    Filed: November 1, 2016
    Publication date: May 4, 2017
    Inventors: Pingyong Xu, John Fong
  • Patent number: 9604408
    Abstract: In one aspect, build materials operable for use in 3D printing systems are described herein. In some embodiments, a build material comprises an oligomeric curable material, a reactive component that is solid at 25° C., and at least one diluent, wherein the reactive component comprises at least one chemical moiety that is polymerizable with a chemical moiety contained in the oligomeric curable material and/or the at least one diluent.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: March 28, 2017
    Assignee: 3D Systems, Inc.
    Inventors: Pingyong Xu, John Stockwell